So you come on a Mustang forum and ask if you should get a mustang as your first car? :dw:
Anyways, it just depends on what you're going to be doing it. Is it going to be a DD? Do you plan on modding it at all down the road? Are you buying used or new?
What he said. Pretty much ANY car can be a right choice. It depends on what your needs are, what you like, what you plan to do with the car, what your budget is, etc.
Buy what you like and like what you buy. Don't know what else to really tell you.